Classification
333 - Economics of land & energy
5
620 - Engineering & allied operations
4
338 - Production
2
330 - Economics
1
363 - Other social problems & services
1
600 - Technology
1
621 - Applied physics
1
629 - Other branches of engineering
1
658 - General management
1
662 - Explosives, fuels & related products
1
745 - Decorative arts
1